<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <style>
        #div1{
            width: 200px;
            height: 200px;
            background: red;
            opacity: 0.5;
        }

        #div2{
            width: 200px;
            height: 200px;
            background: rgba(255, 1, 1, 0.5);
            margin-top: 20px;
            cursor:pointer;

        }



        
    </style>


</head>
<body>

    <div id="div1">萨达所是</div>
    <div id="div2">嘎嘎嘎嘎嘎</div>
    
</body>
</html>